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Finding the Fourth Proportional to 8,806.78, 12,153.82 and 4,828.06

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Solution

The fourth proportional to 8,806.78, 12,153.82 and 4,828.06 is: 6,662.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,806.78 : 12,153.82 = 4,828.06 : x
  2. Step 2: Convert to fraction form
    8,806.78/12,153.82 = 4,828.06/x
  3. Step 3: Cross multiply
    8,806.78x = 12,153.82 × 4,828.06
  4. Step 4: Simplify right side
    8,806.78x = 58,679,372.19
  5. Step 5: Solve for x
    x = 58,679,372.19/8,806.78
  6. Step 6: Final answer
    x = 6,662.98

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.